The ________ element is used to provide alternative content if a viewer's browser does not support JavaScript

Which of the following best describes a peer-to-peer network?

a. It decentralizes the resources on a network. b. It centralizes the resources on a network. c. It uses file servers. d. It uses the client/server model.

What happens when two blocks, one nested inside of the other, both declare variables with the same identifier? (Assume that the outer block declares its variable before the opening left-brace of the inner block.)

a. A syntax error occurs. b. The “outer” variable is hidden while the “inner” variable is in scope. c. The “outer” variable is irretrievably lost when the “inner” variable is declared. d. The “inner” declaration is ignored and the “outer” variable has scope even inside the inner block.